Truss-fixture



W. D. PATTON.

TRUSS FIXTURE.

APPLICATIDN FILED FEB. 2. 1.920.

1,389,378. Pa t d Aug- 30, 1921.

'material.

UNITED STATES P T NT OF IcE.

WILLIAM 1). narrow, or PHILADELPHIA, PENNSYLVANIA, assrsn'on To WILLI M H."

ORN & snoprnnn :rnconronnrnn, on PHILADELPHIA, PENNSYLVANIA, A

PORATION OF PENNSYLVANIA.

TRUSS-FIXTURE.

Specification of Letters Patent. Patented Atlg. 30,

Application filed February 2, 1920. Serial No. 355,747.

To all whom it may concern: 1 Be it known that I, VILLIAM DPnrrrON, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented Truss-Fixtures, of which the following is a specification.

Under conditions of use hernia or rupture pads tend to turn uponthe screws or other members whereby they are connected to their supporting frame, and it is essential that such dislodgment should be prevented, while at the sametime leaving it possible for the pad to be adjusted atwill. One object of myinvention therefore is to provide a relatively simple, substantialand reliable device for connecting a truss pad to its supporting frame, which shall normally prevent the turning of said pad and also permit of its convenient andv rapid adjustment:

A further object of the inventionisto-provide a novel form of pivotal connection for attaching a truss pad to its supporting frame, which. may be conveniently: and.

quickly loosened to permit either the. rota: tion of the pad so that this maybe placed at any desired angle of the line of .theadjacent portion of the frame, or its lateral movement to either side of its mid position.

These objects and other. advantageous.

ends I attain as hereinafter set forth, refer ence being had to the accompanying drawings, in which,

Figure 1 is a perspective view of a truss pad and part of its associated frame, showing my invention as applied thereto;

Fig. 2 is an elevation of the rear face of the pad shown in Fig. 1;

Fig. 3 is a longitudinalvertical section on the line 33, Fig. 2;

Fig. 4: is a fragmentary elevation of the front face of that part of the truss frame to which the pad is attached;

Figs. 5 and 6 are perspective views of the opposite faces of the connecting block constituting part of my invention; and

Fig. 7 is an enlarged vertical section of a slightly modified form of my inventlon.

In the above drawings 1 represents a portion of the body of a well-known form of truss frame, to each end of which is hinged a section 2 of relatively rigid material such as a fiat bar or band of brass or other suitable This frame section is formed with a longitudinally extending and relativelynarrow. slot 3,. whose longitudinal edges areserrated as indicated'at 4:; for COaCtlOIl'Wlf/h a toothed projection 5 from a circular block 6v which is perforated or centrally bored for the reception of a connecting-screw 7. That face of the block opposite the toothed projection 5. is provided with aparallel sided projection 8 of such a width as to slidably fit an elongated'slot formed in a metal plate 10 set in the rear faceof the truss pad 11. I This latter is made of hard rubber .:or other suitable material, and is transversely recessed under theplatelO to. provide aslideway for non-rotatablyholding.anut 12 threaded to receive .theconnectingscrew 7. The thickness or height of the projectionS of the block 6 is preferably the same as or a little less than the thickness of the metal plate 10, which is'fixed to .thepad'll by screws13.

While the toothed projection 5 may have the formof a spur gear and the serrations- 4 in the truss. member 2 take the form of parallel teeth extending from face to face thereof, I preferably. give" said projectiona conical form with its teeth converging in a manner similar to those of-a beveled gear,

,while also allowing said pad to be moved longitudinally ofthe frame section 2 as well as rotated upon the screw 7 into'any desired angular position. When properly adjusted, the setting up of the screw draws the nut 12 tightly against the under side of the plate 10 and causes the teeth of the projection 5 of the block 6 to be drawn into the serrations of the teeth 4 of the slot 3. As a consequence the truss pad is immovably held in the desired position relatively to the frame 2, for its plate 10 is rigidly and immovably clamped between the block 6 and form the serrations i-inclinedat an:

and the nut 12, while said block, by reason of the engagement of its projectionfi with the teeth 'of the frame member. is immovably held to the latter.

If desired the opposite sides of the slot 9 in the plate 10 may be toothed as indicated in Fig. 4, and in place of the parallel side.

projection 8, I may employ a second toothed projection 16 similar to the toothed projection 5, as illustrated in Fig. 7. While this construction gives a connection between the truss pad and 'the truss, which is more positive than that shown in Fig. 3, I have found that under practical conditions, the latter form of the invention is satisfactory and meets the requirements as above described. In any case it is possible to quickly adjust the pad 11 on the frame section 2 when the screw 7 has been slightly loosened or backed off, and after it has been again tightened with the truss pad in the desired position, the latter is immovably held in place without possibility of becomingloosened under conditions of use.

' I claim 1. The combination of a truss frame having an elongated serrated slot, a truss pad having a toothed projection formed to nonrotatably engage the serrations of such slot and means for clamping said parts together.

2. The combination of a truss frame having a serrated opening; a truss pad; a member having a toothed projection formed to cooperate with the serrations of said opening; and means for clamping the pad to the frame with the toothed projection in engagement with 'the serrations of said openmg.

3. The combination of a frame having a serrated opening; a truss pad; means for connecting said pad and frame consisting of a block mounted between them, said block non-rotatably engaging the pad and having a toothed portion entering said'opening of elongated serrated opening; a block having a toothed projection extending into said opening; a truss pad formed to non-rotatably engage said block; and a screw for re movably clamping the pad, block and frame together.

5. The combination of a frame having an elongated opening; a truss pad; a member non-rotatably fitting said opening and also non-rotatably engaging said pad; with means for clamping the pad, frame and block together.

6. The combination of a frame having an elongated opening formed with inclined teeth; a truss pad; a block detachably but non-rotatably engaging said pad and having I a beveled toothed projection; and amember for immovably holding the pad, frame and:

block together with the teeth of said latter elements in locking engagement.

7 The combination of a truss frame having an elongated serrated opening; a truss pad and means including a toothed structure cooperating with the serrations of said opening, for non-rotatably connecting said pad and the frame. 7

8. The combination of a truss pad; a slotted plate thereon; a nut retained in the pad by said plate; a block having a portion fitting the slot of. the plate and also having a toothed projection; a frame having a serrated slot for the reception of said projection; and a member engaging the nut for clamping together the pad, frame and block.

9. The combination of a truss pad; a plate thereon having a serrated slot ;-a frame also having a serrated slot; a block having toothed portions fitting the slots of the pad and frame; frame, pad and block together.

WILLIAM D. PATTON.

with means for clamping the. 

